CNC Machined in the USA with USA made Steel With a durable black oxide finish.
All threads are checked with calibrated gages to insure a top quality part.
1/2 x 28 thread
The outside dia. is 7/8"
thickness is .200"
3/4 wrench flats.
Two per package.
This Jam Nut is used in place of crush washers or shim kits to properly align
muzzle devices such as muzzle brakes and flash hiders that need to be timed.
The Jam Nut is threaded onto the barrel before the muzzle device and then is
backed out to tighten against the back side of the muzzle device.
Free First Class shipping with tracking!!
Reusable Jam Nut for muzzle Check out my other items